702560 Spectrum Digital Inc, 702560 Datasheet - Page 24

• Manufacturer Part Number: 702560
• Description: XDS560R USB JTAG Emulator With 20 Pin CTI JTAG Header
• Manufacturer: Spectrum Digital Inc
• Type: USB JTAG Emulatorr

Specifications of 702560

• Contents: Board, Cable
• Ic Product Type: USB JTAG Emulator
• Kit Contents: XDS560R USB JTAG Emulator With CTI JTAG Header, CDROM With Drivers, USB Cable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TI DSPs and JTAG Microcontrollers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Spectrum Digital, Inc
3-6
To support selection of the proper I/O voltage, the target header has a Target Voltage
Detect (TVD) signal. This signal (pin 5) should be tied to the I/O voltage of the target
processor.
If the target system needs to supports multiple I/O voltages on the scan string, the
lowest voltage devices should be placed first.
A translation buffer should be used to connect the rest of the scan string. TCK, TMS,
and TRST must have similar considerations.
Two copies of each signal may be required with each driving a different voltage level.
Comparator
Op-Amp
Translator
Level
Out
Out
Out
Out
Out
Out
In4
In1
In2
In3
In
In
27Ω
27Ω
27Ω
27Ω
27Ω
27Ω
Figure 3-3, Emulator Pod Interface
.01 uF
100
KΩ
100
KΩ
100
KΩ
XDS560R JTAG Emulator Installation Guide
100
KΩ
10 KΩ
EMU0 13
100Ω
100
KΩ
100 KΩ
TCK 11
TCKR 9
TMS 1
TDO 7
TVD 5
TDI 3
100 pF
TVD Voltage
.01 uF
Emulation
Header
TVD Voltage /2
4 TDIS
6 GND
8 GND
10 GND
12 GND
14 EMU1
2 TRST
100 KΩ
10 KΩ
VCC